freeCodeCamp/curriculum/challenges/english/04-data-visualization/d3-dashboard/part-085.md at 7ce85a8f0366be5e1eeca2998ef23d025ee111d3

Files

Randell Dawson 94f0cf0ef8 chore(learn): Remove remaining isHidden keys from frontmatter (English and Chinese challenges) (#39809 )

* fix: remove isHidden key from tool template

* fix: removed isHidden key from English challenges

* fix: remove isHidden key from Chinese challenges

2020-10-08 14:18:47 +02:00

8.4 KiB

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id, title, challengeType

id	title	challengeType
5d8a4cfbe6b6180ed9a1ca32	Part 85	0

Description

Create a new const named pieArc and set it equal to d3.arc(). This will be used to create the angles for the lines of the pie chart using the D3 arc generator.

Instructions

Tests

tests:
  - text: test-text
    testString: assert(/const\s*pieArc\s*=\s*d3\s*\.\s*arc\s*\(\s*\)/g.test(code));

Challenge Seed

<script>
  const data = [ 
    { year: 2012, followers: { twitter: 2594, tumblr:  401, instagram:   83 }},
    { year: 2013, followers: { twitter: 3049, tumblr:  440, instagram:  192 }},
    { year: 2014, followers: { twitter: 3511, tumblr:  415, instagram:  511 }},
    { year: 2015, followers: { twitter: 3619, tumblr:  492, instagram: 1014 }},
    { year: 2016, followers: { twitter: 4046, tumblr:  543, instagram: 2066 }},
    { year: 2017, followers: { twitter: 3991, tumblr:  701, instagram: 3032 }},
    { year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
    { year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
    { year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
  ];
</script>
<script>
  const svgMargin = 70,
    svgWidth = 700,
    svgHeight = 500,
    twitterColor = '#7cd9d1',
    tumblrColor = '#f6dd71',
    instagramColor = '#fd9b98';

  const lineGraph = d3.select('.dashboard')
    .append('svg')
    .attr('width', svgWidth)
    .attr('height', svgHeight);

  const yScale = d3.scaleLinear()
    .domain([0, 5000])
    .range([svgHeight - svgMargin, svgMargin]);

  const xScale = d3.scaleLinear()
    .domain([2012, 2020])
    .range([svgMargin, svgWidth - svgMargin]);

  const yAxis = d3.axisLeft(yScale)
    .ticks(6, '~s');

  const xAxis = d3.axisBottom(xScale)
    .tickFormat(d3.format(''))
    .tickPadding(10);

  lineGraph.append('g')
    .call(yAxis)
    .attr('transform', `translate(${svgMargin}, 0)`)
    .style('font', '10px verdana');

  lineGraph.append('g')
    .call(xAxis)
    .attr('transform', `translate(0, ${svgHeight - svgMargin})`)
    .selectAll('text')
    .style('transform', 'translate(-12px, 0) rotate(-50deg)')
    .style('text-anchor', 'end')
    .style('cursor', 'pointer')
    .style('font', '10px verdana')

  const twitterLine = d3.line()
    .x(d => xScale(d.year))
    .y(d => yScale(d.followers.twitter));

  lineGraph.append('path')
    .attr('d', twitterLine(data))
    .attr('stroke', twitterColor)
    .attr('stroke-width', 3)
    .attr('fill', 'transparent');

  const tumblrLine = d3.line()
    .x(d => xScale(d.year))
    .y(d => yScale(d.followers.tumblr));

  lineGraph.append('path')
    .attr('d', tumblrLine(data))
    .attr('stroke', tumblrColor)
    .attr('stroke-width', 3)
    .attr('fill', 'transparent');

  const instagramLine = d3.line()
    .x(d => xScale(d.year))
    .y(d => yScale(d.followers.instagram));

  lineGraph.append('path')
    .attr('d', instagramLine(data))
    .attr('stroke', instagramColor)
    .attr('stroke-width', 3)
    .attr('fill', 'transparent');
    
  lineGraph.selectAll('twitter-circles')
    .data(data)
    .enter()
    .append('circle')
    .attr('cx', d => xScale(d.year))
    .attr('cy', d => yScale(d.followers.twitter))
    .attr('r', 6)
    .attr('fill', 'white')
    .attr('stroke', twitterColor)
    .style('cursor', 'pointer')

  lineGraph.selectAll('tumblr-circles')
    .data(data)
    .enter()
    .append('circle')
    .attr('cx', d => xScale(d.year))
    .attr('cy', d => yScale(d.followers.tumblr))
    .attr('r', 6)
    .attr('fill', 'white')
    .attr('stroke', tumblrColor)
    .style('cursor', 'pointer')

  lineGraph.selectAll('instagram-circles')
    .data(data)
    .enter()
    .append('circle')
    .attr('cx', d => xScale(d.year))
    .attr('cy', d => yScale(d.followers.instagram))
    .attr('r', 6)
    .attr('fill', 'white')
    .attr('stroke', instagramColor)
    .style('cursor', 'pointer')

  const rightDashboard = d3.select('.dashboard')
    .append('div');

  const pieGraph = rightDashboard.append('svg')
    .attr('width', 200)
    .attr('height', 200)

    

</script>

Before Test

<!DOCTYPE html>
<html>
  <head>
    <title>D3 Dashboard</title>
    <style>
      body {
        background-color: #ccc;
        padding: 100px 10px;
      }

      .dashboard {
        width: 980px;
        height: 500px;
        background-color: white;
        box-shadow: 5px 5px 5px 5px #888;
        margin: auto;
        display: flex;
        align-items: center;
      }
    </style>
  </head>

  <body>
    <div class="dashboard"></div>
  </body>
</html>

Solution

<script>
  const data = [ 
    { year: 2012, followers: { twitter: 2594, tumblr:  401, instagram:   83 }},
    { year: 2013, followers: { twitter: 3049, tumblr:  440, instagram:  192 }},
    { year: 2014, followers: { twitter: 3511, tumblr:  415, instagram:  511 }},
    { year: 2015, followers: { twitter: 3619, tumblr:  492, instagram: 1014 }},
    { year: 2016, followers: { twitter: 4046, tumblr:  543, instagram: 2066 }},
    { year: 2017, followers: { twitter: 3991, tumblr:  701, instagram: 3032 }},
    { year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
    { year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
    { year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
  ];
</script>
<script>
  const svgMargin = 70,
    svgWidth = 700,
    svgHeight = 500,
    twitterColor = '#7cd9d1',
    tumblrColor = '#f6dd71',
    instagramColor = '#fd9b98';

  const lineGraph = d3.select('.dashboard')
    .append('svg')
    .attr('width', svgWidth)
    .attr('height', svgHeight);

  const yScale = d3.scaleLinear()
    .domain([0, 5000])
    .range([svgHeight - svgMargin, svgMargin]);

  const xScale = d3.scaleLinear()
    .domain([2012, 2020])
    .range([svgMargin, svgWidth - svgMargin]);

  const yAxis = d3.axisLeft(yScale)
    .ticks(6, '~s');

  const xAxis = d3.axisBottom(xScale)
    .tickFormat(d3.format(''))
    .tickPadding(10);

  lineGraph.append('g')
    .call(yAxis)
    .attr('transform', `translate(${svgMargin}, 0)`)
    .style('font', '10px verdana');

  lineGraph.append('g')
    .call(xAxis)
    .attr('transform', `translate(0, ${svgHeight - svgMargin})`)
    .selectAll('text')
    .style('transform', 'translate(-12px, 0) rotate(-50deg)')
    .style('text-anchor', 'end')
    .style('cursor', 'pointer')
    .style('font', '10px verdana')

  const twitterLine = d3.line()
    .x(d => xScale(d.year))
    .y(d => yScale(d.followers.twitter));

  lineGraph.append('path')
    .attr('d', twitterLine(data))
    .attr('stroke', twitterColor)
    .attr('stroke-width', 3)
    .attr('fill', 'transparent');

  const tumblrLine = d3.line()
    .x(d => xScale(d.year))
    .y(d => yScale(d.followers.tumblr));

  lineGraph.append('path')
    .attr('d', tumblrLine(data))
    .attr('stroke', tumblrColor)
    .attr('stroke-width', 3)
    .attr('fill', 'transparent');

  const instagramLine = d3.line()
    .x(d => xScale(d.year))
    .y(d => yScale(d.followers.instagram));

  lineGraph.append('path')
    .attr('d', instagramLine(data))
    .attr('stroke', instagramColor)
    .attr('stroke-width', 3)
    .attr('fill', 'transparent');
    
  lineGraph.selectAll('twitter-circles')
    .data(data)
    .enter()
    .append('circle')
    .attr('cx', d => xScale(d.year))
    .attr('cy', d => yScale(d.followers.twitter))
    .attr('r', 6)
    .attr('fill', 'white')
    .attr('stroke', twitterColor)
    .style('cursor', 'pointer')

  lineGraph.selectAll('tumblr-circles')
    .data(data)
    .enter()
    .append('circle')
    .attr('cx', d => xScale(d.year))
    .attr('cy', d => yScale(d.followers.tumblr))
    .attr('r', 6)
    .attr('fill', 'white')
    .attr('stroke', tumblrColor)
    .style('cursor', 'pointer')

  lineGraph.selectAll('instagram-circles')
    .data(data)
    .enter()
    .append('circle')
    .attr('cx', d => xScale(d.year))
    .attr('cy', d => yScale(d.followers.instagram))
    .attr('r', 6)
    .attr('fill', 'white')
    .attr('stroke', instagramColor)
    .style('cursor', 'pointer')

  const rightDashboard = d3.select('.dashboard')
    .append('div');

  const pieGraph = rightDashboard.append('svg')
    .attr('width', 200)
    .attr('height', 200)

  const pieArc = d3.arc()



</script>

8.4 KiB Raw Blame History